When Sara (Caity Lotz) receives a distress call from their "befriended" agent at the Time Bureau, she learns that they have been tasked with going to the future to capture a rogue time traveler. Unfortunately, the Legends make things worse by trying to protect an outlaw named Zari (Tala Ashe), to hopefully lure in the time travelling assassin. Meanwhile, Stein (Victor Garber) tries to diagnose Amaya's (Maisie Richardson-Sellers) condition, but Nate (Nick Zano) discovers an unusual treatment that Amaya begrudgingly agrees to.

DC'S LEGENDS OF TOMORROW Episode Title: S03E04 "Phone Home"

HELPING ONE OF THEIR OWN - The Legends learn that Ray Palmer (Brandon Routh) will die because they broke time, causing them to race back to 1988 to try and save his life. When they arrive, they are surprised to learn that young Ray Palmer has befriended a time-displaced baby Dominator putting him in harm's way with the government and the Dominator's mother. New to the ship and missions, Zari (Tala Ashe) must find her place and learn to trust the team. Meanwhile, Stein (Victor Garber) begins working on a secret project on the ship which makes Rory (Dominic Purcell) and Jax (Franz Drameh) suspicious.

THE FLASH Episode Title: S04E03 "Luck Be a Lady

Barry (Grant Gustin) and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky (guest star Sugar-Lyn Beard) nicknamed Hazard, who has the ability to give others bad luck, while cashing in the benefits for herself. Meanwhile, Harry Wells (Tom Cavanagh) returns to Earth-1 to give Wally (Keiynan Lonsdale) a message from Jesse.

A rogue black ops team led by Onyx (guest star Chastity Dotson) breaks into Kord Industries and steals something lethal. Oliver (Stephen Amell) struggles to connect with William (guest star Jack Moore) so he reaches out to a surprising source for help. =

ARROW Episode Title: S06E04 "Reversal"

BLACK SIREN STRIKES AGAIN - Just as Oliver (Stephen Amell) starts to get things in order, Black Siren (Katie Cassidy) launches another attack on the citizens of Star City.